Friedrich ZoneAire Select PZH12K3SC Handleiding (73 Pagina's)

Handleiding

37

PB

TROUBLESHOOTING

E4 Function Error

Error code: E4: Indoor Outlet Air Overheat Protection in Electric heating mode

Indoor Outlet Air Overheat Protection

Check if the indoor inlet、outlet、

filter and evaporator are blocked

Remove dirt and keep it

unobstructed

YES

NO

Check if the ambient temp is too high

OK

YES

Error

YES

NO

The indoor motor power cable should

be firmly connected to power board

Check the connection between the

indoor motor and power board

Check if the indoor fan motor

is running normal

Reduce the ambient temperature

to the allowable range

Check if the fan capacitor is

connected well and firmly

 Troubleshooting

Check for blocking or

restriction

Check for blocking or

restriction

Figure 505

E4 protection logic:（electric heating 3.6KW/5KW（

When T4>150˚F the fan will switch to high speed.

At this time, such as T4≥154˚F, turn off the electric heating. The fan runs high speed; When the electric heating is turned off for one minute and

T4≤115˚F is detected and the operating speed of the fan returns to the set speed.

If T4≥154˚F is detected three times within 30 minutes, E4 fault is reported and power down is required to recover.

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